459. Repeated Substring Pattern

Given a non-empty string check if it can be constructed by taking a substring of it and appending multiple copies of the substring together. You may assume the given string consists of lowercase English letters only and its length will not exceed 10000.

Example 1:

Input: "abab"
Output: True
Explanation: It's the substring "ab" twice.

Example 2:

Input: "aba"
Output: False

Example 3:

Input: "abcabcabcabc"
Output: True
Explanation: It's the substring "abc" four times. (And the substring "abcabc" twice.)

# @lc code=start
using LeetCode

function repeated_substring_pattern(s::String)
    findnext(s, s^2, 2) != length(s) + 1 : 2 * length(s)
end
# @lc code=end

repeated_substring_pattern (generic function with 1 method)

This page was generated using DemoCards.jl and Literate.jl.